Filler Rheology
Do you ever wonder why an injector chooses a specific filler for a specific area? The answer is probably due to the rheology of the filler. Rheology is the study of how substances flow; it's essential in understanding the behavior of dermal fillers. The rheological properties of a filler determine its texture, spreadability, and how it interacts with the skin. Choosing the right filler depends on the specific needs of the treatment area and the desired results.
The Mechanical Properties
Viscosity: Determines the thickness and flow of the filler.
Elasticity: Affects how well the filler can maintain its shape after injection.
Cohesivity: Influences how well the filler stays together under pressure.
Examples by Area
Takeaways
It's important for your injector to understand the physical and chemical properties of hyaluronic acid fillers to choose the best product for you.
Understanding how the HA is structured, its concentration, and how it behaves in your skin are essential for achieving the best results. Your injector will take these into account to ensure you get the right treatment.
Knowledge of anatomy, along with proper injection technique, are crucial to minimizing the risk of complications.
In the rare event of a blocked blood vessel, your injector will quickly use hyaluronidase to dissolve the filler, possibly requiring multiple injections to fully clear the blockage.
References
Choi M. S. (2020). Basic rheology of dermal filler. Archives of plastic surgery, 47(4), 301-
Wu, G. T., Kam, J., & Bloom, J. D. (2022).
Hyaluronic acid basics and rheology. Facial Plastic Surgery Clinics of North America,
30(3), 301-308.
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